package cn.openea.perpartner.common.auth.util;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


/**
 * @author Administrator
 */
public class CookieUtil {

	/**
	 * 默认缓存时间,单位/秒, 2H
	 */
	private static final int COOKIE_MAX_AGE = Integer.MAX_VALUE;
	/**
	 * 保存路径,根路径
	 */
	private static final String COOKIE_PATH = "/";

	public static void set(HttpServletResponse response, String key,String value,boolean ifRem) {
		int age = ifRem?COOKIE_MAX_AGE:-1;
		set(response, key, value, age);
	}

	private static void set(HttpServletResponse response,String key,String value,int maxAge) {
		Cookie cookie = new Cookie(key, value);
		cookie.setPath(COOKIE_PATH);
		cookie.setMaxAge(maxAge);
		cookie.setHttpOnly(true);
		response.addCookie(cookie);
	}

	/**
	 * 查询value
	 */
	public static String getValue(HttpServletRequest request, String key) {
		Cookie cookie = get(request, key);
		return cookie != null?cookie.getValue():null;
	}

	/**
	 * 查询Cookie
	 */
	private static Cookie get(HttpServletRequest request, String key) {
		Cookie[] arr_cookie = request.getCookies();
		if (arr_cookie != null && arr_cookie.length > 0) {
			for (Cookie cookie : arr_cookie) {
				if (cookie.getName().equals(key)) {
					return cookie;
				}
			}
		}
		return null;
	}
	
	/**
	 * 删除Cookie
	 */
	public static void remove(HttpServletRequest request, HttpServletResponse response, String key) {
		Cookie cookie = get(request, key);
		if (cookie != null) {
			set(response, key, "", 0);
		}
	}

}